20108865

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 37920960

約数和(自身を除く): 17812095

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 109, 147, 245, 251, 327, 545, 735, 753, 763, 1255, 1635, 1757, 2289, 3765, 3815, 5271, 5341, 8785, 11445, 12299, 16023, 26355, 26705, 27359, 36897, 61495, 80115, 82077, 136795, 184485, 191513, 410385, 574539, 957565, 1340591, 2872695, 4021773, 6702955, 20108865]

約数ペア:

[(1, 20108865), (3, 6702955), (5, 4021773), (7, 2872695), (15, 1340591), (21, 957565), (35, 574539), (49, 410385), (105, 191513), (109, 184485), (147, 136795), (245, 82077), (251, 80115), (327, 61495), (545, 36897), (735, 27359), (753, 26705), (763, 26355), (1255, 16023), (1635, 12299), (1757, 11445), (2289, 8785), (3765, 5341), (3815, 5271)]